Kỹ thuật viễn thông_Lab 6

I/ OBJECTIVESAfter completing this experiment, you should be able to:- Implement the decade counters, dual decade counters and presettable 4-bit binaryup/down counter- Design programmable frequency division.- Understand the operations of some IC counters.II/ COMPONENTS REQUIRED1. Main board and sub board of Digital Logic System Kit.2. IC 74LS90 : Decade Counters3. IC 74LS193: Presettable 4-bit binary up/down counter4. IC 74LS390: Dual 4-Bit Decade Counter
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Kỹ thuật viễn thông_Lab 6 INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRONICS & TELECOMMUNICATIONS ENGINEERING (EE) DIGITAL LOGIC SYSTEMS LABORATORYLab 6 COUNTERIC Full name:................................................................... Student Number:...................................................... Class:............................................................................. Date:..............................................................................DIGITAL LOGIC SYSTEMS Page 1 of 10 INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRONICS & TELECOMMUNICATIONS ENGINEERING (EE)I/ OBJECTIVESAfter completing this experiment, you should be able to:  Implement the decade counters, dual decade counters and presettable 4-bit binary up/down counter  Design programmable frequency division.  Understand the operations of some IC counters.II/ COMPONENTS REQUIRED 1. Main board and sub board of Digital Logic System Kit. 2. IC 74LS90 : Decade Counters 3. IC 74LS193: Presettable 4-bit binary up/down counter 4. IC 74LS390: Dual 4-Bit Decade CounterIII/ INTRODUCTION1. Decade and binary counter 74LS90  Implement given circuit and get the results  Use an extra IC 74LS00 and wire them as a MOD-6 counter2. Dual 4-bit decade counters 74LS390  Wire the 74LS390 as a MOD-100 counter  Wire the 74LS390 as a MOD-60 counter.3. Presettable 4-bit binary up/down counter  Describe the function of each input and output.  Variable MOD number using the 74193 (Up and Down counter)IV/ PRE-LAB - Pre-lab includes reading the lab assignment in advance, answering the questionsor doing the calculations, and if necessary reviewing the material in the textbook. All pre-lab preparation must be recorded and dated in the lab sheet prior do doing the lab. The labinstructor will check your pre-lab write-up and sign your pre-lab sheet. - Answering all the questions, fulfill the truth table and draw circuit or logicdiagram (in figures 3, 5, 6, 9, 10, 11) on this experiment before doing the lab. - If you don’t prepare the pre-lab, you will not allowed to experiment.IV/ EXPERIMENT1. COMMON ANODE 7-SEGMENT LED & DECODER IC 74LS47 SW8 -SW11 6 1 3 2 D a 1 2 1 C b 1 1 7 B c 1 0 A d 9 e 1 5 ( A (a,b,c,d,e,f,g)) LED A f SW 12 3 LT g 1 4 ,B ,C ,D ,E ,F ,G L E D A 5 SW 13 4 R BI SW 14 B I/R B O 74LS47 Figure 1 – IC7447 and 7-segment - LEDDIGITAL LOGIC SYSTEMS Page 2 of 10 INTERNATIONAL UNIVERSITY SCHOOL OF ELECTRONICS & TELECOMMUNICATIONS ENGINEERING (EE)  The pins a, b, c, d, e, f, g of IC 7447 are connected to a, b, c, d, e, f, g of 7-segment led display shown in figure 1  The data inputs D, C, B, A are connected to switches  The control inputs LT, RBI, BI/RBO are connected to switches and they are in the appropriate states to make the circuit operating  Fulfill the truth table of IC7447 in Table 1 Inputs Outputs Control inputs Data inputs Display LT RBI RBO D C B A a b c d e f g 1 1 1 0 0 0 0 1 1 1 0 0 0 1 1 1 1 0 0 1 0 1 1 1 0 0 1 1 1 1 1 0 1 0 0 1 1 1 0 1 0 1 1 1 1 0 1 1 0 1 1 1 ...